13211261 has 16 divisors (see below), whose sum is σ = 16235136. Its totient is φ = 10492416.

The previous prime is 13211243. The next prime is 13211267. The reversal of 13211261 is 16211231.

It is a cyclic number.

It is not a de Polignac number, because 13211261 - 2¹⁰ = 13210237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13211267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7145 + ... + 8801.

It is an arithmetic number, because the mean of its divisors is an integer number (1014696).

Almost surely, 2^13211261 is an apocalyptic number.

It is an amenable number.

13211261 is a deficient number, since it is larger than the sum of its proper divisors (3023875).

13211261 is a wasteful number, since it uses less digits than its factorization.

13211261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748.

The product of its digits is 72, while the sum is 17.

The square root of 13211261 is about 3634.7298386538. The cubic root of 13211261 is about 236.4003367389.

Adding to 13211261 its reverse (16211231), we get a palindrome (29422492).

The spelling of 13211261 in words is "thirteen million, two hundred eleven thousand, two hundred sixty-one".